./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f41a78d87834195eab5eb2e1b786d665ee0f261c86aa89f4e0ae15aff9e9d1ee --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 14:02:30,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 14:02:30,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 14:02:30,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 14:02:30,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 14:02:30,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 14:02:30,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 14:02:30,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 14:02:30,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 14:02:30,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 14:02:30,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 14:02:30,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 14:02:30,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 14:02:30,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 14:02:30,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 14:02:30,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 14:02:30,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 14:02:30,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 14:02:30,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 14:02:30,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 14:02:30,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 14:02:30,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 14:02:30,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 14:02:30,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 14:02:30,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 14:02:30,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 14:02:30,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 14:02:30,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 14:02:30,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 14:02:30,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 14:02:30,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 14:02:30,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 14:02:30,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 14:02:30,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 14:02:30,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 14:02:30,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 14:02:30,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 14:02:30,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 14:02:30,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 14:02:30,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 14:02:30,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 14:02:30,272 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-23 14:02:30,305 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 14:02:30,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 14:02:30,306 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 14:02:30,306 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 14:02:30,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 14:02:30,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 14:02:30,308 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 14:02:30,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 14:02:30,309 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 14:02:30,309 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 14:02:30,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 14:02:30,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 14:02:30,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 14:02:30,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 14:02:30,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 14:02:30,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 14:02:30,310 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-23 14:02:30,310 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 14:02:30,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 14:02:30,311 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 14:02:30,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 14:02:30,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 14:02:30,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 14:02:30,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 14:02:30,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:02:30,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 14:02:30,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 14:02:30,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 14:02:30,313 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 14:02:30,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 14:02:30,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 14:02:30,314 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 14:02:30,314 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41a78d87834195eab5eb2e1b786d665ee0f261c86aa89f4e0ae15aff9e9d1ee [2021-11-23 14:02:30,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 14:02:30,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 14:02:30,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 14:02:30,626 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 14:02:30,627 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 14:02:30,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i [2021-11-23 14:02:30,727 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/data/30a4a8ce7/81c5ce8b937043ac8fd190f343eab1bd/FLAG4405bff6f [2021-11-23 14:02:31,335 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 14:02:31,335 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i [2021-11-23 14:02:31,374 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/data/30a4a8ce7/81c5ce8b937043ac8fd190f343eab1bd/FLAG4405bff6f [2021-11-23 14:02:31,536 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/data/30a4a8ce7/81c5ce8b937043ac8fd190f343eab1bd [2021-11-23 14:02:31,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 14:02:31,540 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 14:02:31,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 14:02:31,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 14:02:31,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 14:02:31,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:02:31" (1/1) ... [2021-11-23 14:02:31,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5803b5ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:31, skipping insertion in model container [2021-11-23 14:02:31,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:02:31" (1/1) ... [2021-11-23 14:02:31,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 14:02:31,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 14:02:32,207 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i[33021,33034] [2021-11-23 14:02:32,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:02:32,441 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 14:02:32,469 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i[33021,33034] [2021-11-23 14:02:32,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:02:32,610 INFO L208 MainTranslator]: Completed translation [2021-11-23 14:02:32,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:32 WrapperNode [2021-11-23 14:02:32,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 14:02:32,613 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 14:02:32,614 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 14:02:32,614 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 14:02:32,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:32" (1/1) ... [2021-11-23 14:02:32,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:32" (1/1) ... [2021-11-23 14:02:32,781 INFO L137 Inliner]: procedures = 177, calls = 448, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 1511 [2021-11-23 14:02:32,781 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 14:02:32,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 14:02:32,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 14:02:32,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 14:02:32,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:32" (1/1) ... [2021-11-23 14:02:32,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:32" (1/1) ... [2021-11-23 14:02:32,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:32" (1/1) ... [2021-11-23 14:02:32,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:32" (1/1) ... [2021-11-23 14:02:32,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:32" (1/1) ... [2021-11-23 14:02:32,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:32" (1/1) ... [2021-11-23 14:02:32,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:32" (1/1) ... [2021-11-23 14:02:32,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 14:02:32,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 14:02:32,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 14:02:32,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 14:02:33,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:32" (1/1) ... [2021-11-23 14:02:33,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:02:33,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:02:33,043 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 14:02:33,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 14:02:33,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 14:02:33,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 14:02:33,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 14:02:33,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 14:02:33,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 14:02:33,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 14:02:33,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 14:02:33,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 14:02:33,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 14:02:33,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 14:02:33,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 14:02:33,456 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 14:02:33,458 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 14:02:34,970 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 14:02:34,982 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 14:02:34,982 INFO L301 CfgBuilder]: Removed 77 assume(true) statements. [2021-11-23 14:02:34,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:02:34 BoogieIcfgContainer [2021-11-23 14:02:34,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 14:02:34,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 14:02:34,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 14:02:34,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 14:02:34,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:02:31" (1/3) ... [2021-11-23 14:02:34,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598f70d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:02:34, skipping insertion in model container [2021-11-23 14:02:34,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:32" (2/3) ... [2021-11-23 14:02:34,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598f70d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:02:34, skipping insertion in model container [2021-11-23 14:02:34,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:02:34" (3/3) ... [2021-11-23 14:02:34,997 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test4-3.i [2021-11-23 14:02:35,004 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 14:02:35,004 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-23 14:02:35,060 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 14:02:35,068 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 14:02:35,068 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-23 14:02:35,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 273 states, 266 states have (on average 1.6954887218045114) internal successors, (451), 272 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:35,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 14:02:35,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:02:35,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 14:02:35,106 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:02:35,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:02:35,111 INFO L85 PathProgramCache]: Analyzing trace with hash 890350939, now seen corresponding path program 1 times [2021-11-23 14:02:35,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:02:35,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832392945] [2021-11-23 14:02:35,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:35,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:02:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:02:35,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:02:35,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:02:35,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832392945] [2021-11-23 14:02:35,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832392945] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:02:35,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:02:35,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:02:35,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258583210] [2021-11-23 14:02:35,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:02:35,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:02:35,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:02:35,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:02:35,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:02:35,436 INFO L87 Difference]: Start difference. First operand has 273 states, 266 states have (on average 1.6954887218045114) internal successors, (451), 272 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:35,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:02:35,612 INFO L93 Difference]: Finished difference Result 719 states and 1199 transitions. [2021-11-23 14:02:35,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:02:35,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-23 14:02:35,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:02:35,648 INFO L225 Difference]: With dead ends: 719 [2021-11-23 14:02:35,650 INFO L226 Difference]: Without dead ends: 394 [2021-11-23 14:02:35,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:02:35,666 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 229 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:02:35,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 698 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:02:35,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-11-23 14:02:35,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 222. [2021-11-23 14:02:35,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 217 states have (on average 1.3225806451612903) internal successors, (287), 221 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:35,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 287 transitions. [2021-11-23 14:02:35,766 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 287 transitions. Word has length 6 [2021-11-23 14:02:35,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:02:35,767 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 287 transitions. [2021-11-23 14:02:35,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:35,768 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 287 transitions. [2021-11-23 14:02:35,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-23 14:02:35,776 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:02:35,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:02:35,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 14:02:35,779 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:02:35,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:02:35,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1182414084, now seen corresponding path program 1 times [2021-11-23 14:02:35,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:02:35,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121896266] [2021-11-23 14:02:35,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:35,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:02:35,869 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:02:35,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1103027832] [2021-11-23 14:02:35,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:35,885 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:02:35,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:02:35,893 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:02:35,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 14:02:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:02:36,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 14:02:36,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:02:36,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:02:36,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 14:02:36,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:02:36,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121896266] [2021-11-23 14:02:36,456 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:02:36,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103027832] [2021-11-23 14:02:36,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103027832] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:02:36,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:02:36,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:02:36,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599440795] [2021-11-23 14:02:36,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:02:36,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:02:36,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:02:36,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:02:36,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:02:36,471 INFO L87 Difference]: Start difference. First operand 222 states and 287 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:36,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:02:36,574 INFO L93 Difference]: Finished difference Result 459 states and 599 transitions. [2021-11-23 14:02:36,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:02:36,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-23 14:02:36,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:02:36,582 INFO L225 Difference]: With dead ends: 459 [2021-11-23 14:02:36,583 INFO L226 Difference]: Without dead ends: 243 [2021-11-23 14:02:36,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:02:36,587 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 9 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:02:36,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 511 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:02:36,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-23 14:02:36,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 242. [2021-11-23 14:02:36,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 237 states have (on average 1.2953586497890295) internal successors, (307), 241 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:36,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 307 transitions. [2021-11-23 14:02:36,626 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 307 transitions. Word has length 103 [2021-11-23 14:02:36,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:02:36,627 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 307 transitions. [2021-11-23 14:02:36,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:36,628 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 307 transitions. [2021-11-23 14:02:36,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-23 14:02:36,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:02:36,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:02:36,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 14:02:36,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:02:36,865 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:02:36,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:02:36,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1209479686, now seen corresponding path program 1 times [2021-11-23 14:02:36,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:02:36,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052042266] [2021-11-23 14:02:36,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:36,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:02:36,889 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:02:36,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [960446125] [2021-11-23 14:02:36,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:36,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:02:36,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:02:36,904 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:02:36,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 14:02:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:02:37,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 14:02:37,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:02:37,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:02:37,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 14:02:37,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:02:37,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052042266] [2021-11-23 14:02:37,369 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:02:37,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960446125] [2021-11-23 14:02:37,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960446125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:02:37,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:02:37,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:02:37,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866967254] [2021-11-23 14:02:37,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:02:37,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:02:37,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:02:37,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:02:37,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:02:37,373 INFO L87 Difference]: Start difference. First operand 242 states and 307 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:37,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:02:37,459 INFO L93 Difference]: Finished difference Result 499 states and 639 transitions. [2021-11-23 14:02:37,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:02:37,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-23 14:02:37,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:02:37,463 INFO L225 Difference]: With dead ends: 499 [2021-11-23 14:02:37,463 INFO L226 Difference]: Without dead ends: 263 [2021-11-23 14:02:37,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:02:37,465 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 9 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:02:37,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 511 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:02:37,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-11-23 14:02:37,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 262. [2021-11-23 14:02:37,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 257 states have (on average 1.272373540856031) internal successors, (327), 261 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:37,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 327 transitions. [2021-11-23 14:02:37,476 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 327 transitions. Word has length 103 [2021-11-23 14:02:37,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:02:37,477 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 327 transitions. [2021-11-23 14:02:37,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:37,478 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 327 transitions. [2021-11-23 14:02:37,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-23 14:02:37,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:02:37,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:02:37,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 14:02:37,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:02:37,693 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:02:37,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:02:37,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1232111940, now seen corresponding path program 1 times [2021-11-23 14:02:37,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:02:37,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933036780] [2021-11-23 14:02:37,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:37,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:02:37,722 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:02:37,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [440903330] [2021-11-23 14:02:37,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:37,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:02:37,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:02:37,726 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:02:37,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 14:02:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:02:37,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 14:02:37,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:02:38,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:02:38,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 14:02:38,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:02:38,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933036780] [2021-11-23 14:02:38,205 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:02:38,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440903330] [2021-11-23 14:02:38,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440903330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:02:38,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:02:38,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 14:02:38,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335907450] [2021-11-23 14:02:38,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:02:38,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:02:38,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:02:38,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:02:38,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:02:38,209 INFO L87 Difference]: Start difference. First operand 262 states and 327 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:38,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:02:38,311 INFO L93 Difference]: Finished difference Result 509 states and 639 transitions. [2021-11-23 14:02:38,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 14:02:38,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-23 14:02:38,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:02:38,314 INFO L225 Difference]: With dead ends: 509 [2021-11-23 14:02:38,314 INFO L226 Difference]: Without dead ends: 253 [2021-11-23 14:02:38,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:02:38,318 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 271 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:02:38,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 525 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:02:38,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-11-23 14:02:38,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 248. [2021-11-23 14:02:38,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 243 states have (on average 1.2592592592592593) internal successors, (306), 247 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:38,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 306 transitions. [2021-11-23 14:02:38,328 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 306 transitions. Word has length 103 [2021-11-23 14:02:38,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:02:38,330 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 306 transitions. [2021-11-23 14:02:38,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:38,335 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 306 transitions. [2021-11-23 14:02:38,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-23 14:02:38,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:02:38,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:02:38,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 14:02:38,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:02:38,573 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:02:38,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:02:38,573 INFO L85 PathProgramCache]: Analyzing trace with hash -2118897460, now seen corresponding path program 1 times [2021-11-23 14:02:38,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:02:38,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124426548] [2021-11-23 14:02:38,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:38,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:02:38,604 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:02:38,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [882425210] [2021-11-23 14:02:38,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:38,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:02:38,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:02:38,606 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:02:38,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 14:02:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:02:38,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 14:02:38,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:02:39,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:02:39,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 14:02:39,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:02:39,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124426548] [2021-11-23 14:02:39,051 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:02:39,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882425210] [2021-11-23 14:02:39,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882425210] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:02:39,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:02:39,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:02:39,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975530623] [2021-11-23 14:02:39,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:02:39,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 14:02:39,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:02:39,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 14:02:39,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:02:39,053 INFO L87 Difference]: Start difference. First operand 248 states and 306 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:39,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:02:39,169 INFO L93 Difference]: Finished difference Result 734 states and 908 transitions. [2021-11-23 14:02:39,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:02:39,170 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-23 14:02:39,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:02:39,173 INFO L225 Difference]: With dead ends: 734 [2021-11-23 14:02:39,173 INFO L226 Difference]: Without dead ends: 492 [2021-11-23 14:02:39,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:02:39,175 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 263 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:02:39,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 781 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:02:39,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-11-23 14:02:39,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 271. [2021-11-23 14:02:39,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 266 states have (on average 1.244360902255639) internal successors, (331), 270 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:39,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 331 transitions. [2021-11-23 14:02:39,186 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 331 transitions. Word has length 103 [2021-11-23 14:02:39,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:02:39,187 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 331 transitions. [2021-11-23 14:02:39,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:39,187 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 331 transitions. [2021-11-23 14:02:39,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-23 14:02:39,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:02:39,188 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:02:39,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 14:02:39,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:02:39,416 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:02:39,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:02:39,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1031781074, now seen corresponding path program 1 times [2021-11-23 14:02:39,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:02:39,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445520334] [2021-11-23 14:02:39,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:39,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:02:39,434 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:02:39,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [181391722] [2021-11-23 14:02:39,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:39,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:02:39,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:02:39,436 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:02:39,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 14:02:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:02:39,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 14:02:39,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:02:39,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:02:39,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 14:02:39,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:02:39,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445520334] [2021-11-23 14:02:39,851 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:02:39,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181391722] [2021-11-23 14:02:39,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181391722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:02:39,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:02:39,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 14:02:39,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305277737] [2021-11-23 14:02:39,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:02:39,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:02:39,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:02:39,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:02:39,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:02:39,854 INFO L87 Difference]: Start difference. First operand 271 states and 331 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:39,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:02:39,917 INFO L93 Difference]: Finished difference Result 508 states and 623 transitions. [2021-11-23 14:02:39,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 14:02:39,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-23 14:02:39,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:02:39,922 INFO L225 Difference]: With dead ends: 508 [2021-11-23 14:02:39,923 INFO L226 Difference]: Without dead ends: 243 [2021-11-23 14:02:39,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:02:39,925 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 251 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:02:39,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 519 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:02:39,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-23 14:02:39,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2021-11-23 14:02:39,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 234 states have (on average 1.2478632478632479) internal successors, (292), 238 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:39,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 292 transitions. [2021-11-23 14:02:39,936 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 292 transitions. Word has length 103 [2021-11-23 14:02:39,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:02:39,937 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 292 transitions. [2021-11-23 14:02:39,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:39,937 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 292 transitions. [2021-11-23 14:02:39,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-23 14:02:39,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:02:39,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:02:39,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 14:02:40,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:02:40,153 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:02:40,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:02:40,153 INFO L85 PathProgramCache]: Analyzing trace with hash -2145963062, now seen corresponding path program 1 times [2021-11-23 14:02:40,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:02:40,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351337319] [2021-11-23 14:02:40,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:40,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:02:40,169 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:02:40,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [401454441] [2021-11-23 14:02:40,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:40,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:02:40,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:02:40,170 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:02:40,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 14:02:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:02:40,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 14:02:40,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:02:40,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:02:40,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 14:02:40,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:02:40,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351337319] [2021-11-23 14:02:40,543 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:02:40,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401454441] [2021-11-23 14:02:40,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401454441] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:02:40,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:02:40,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 14:02:40,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450064859] [2021-11-23 14:02:40,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:02:40,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:02:40,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:02:40,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:02:40,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:02:40,545 INFO L87 Difference]: Start difference. First operand 239 states and 292 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:40,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:02:40,650 INFO L93 Difference]: Finished difference Result 543 states and 664 transitions. [2021-11-23 14:02:40,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 14:02:40,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-23 14:02:40,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:02:40,655 INFO L225 Difference]: With dead ends: 543 [2021-11-23 14:02:40,655 INFO L226 Difference]: Without dead ends: 310 [2021-11-23 14:02:40,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:02:40,657 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 256 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:02:40,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 780 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:02:40,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-11-23 14:02:40,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 225. [2021-11-23 14:02:40,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 220 states have (on average 1.231818181818182) internal successors, (271), 224 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:40,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 271 transitions. [2021-11-23 14:02:40,670 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 271 transitions. Word has length 103 [2021-11-23 14:02:40,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:02:40,670 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 271 transitions. [2021-11-23 14:02:40,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:40,671 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 271 transitions. [2021-11-23 14:02:40,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-23 14:02:40,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:02:40,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:02:40,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 14:02:40,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:02:40,890 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:02:40,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:02:40,891 INFO L85 PathProgramCache]: Analyzing trace with hash -99394630, now seen corresponding path program 1 times [2021-11-23 14:02:40,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:02:40,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812335217] [2021-11-23 14:02:40,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:40,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:02:40,905 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:02:40,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1125936295] [2021-11-23 14:02:40,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:40,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:02:40,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:02:40,907 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:02:40,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 14:02:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:02:41,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 14:02:41,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:02:41,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:02:41,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 14:02:41,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:02:41,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812335217] [2021-11-23 14:02:41,303 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:02:41,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125936295] [2021-11-23 14:02:41,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125936295] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:02:41,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:02:41,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 14:02:41,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261719125] [2021-11-23 14:02:41,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:02:41,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:02:41,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:02:41,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:02:41,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:02:41,306 INFO L87 Difference]: Start difference. First operand 225 states and 271 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:41,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:02:41,364 INFO L93 Difference]: Finished difference Result 519 states and 623 transitions. [2021-11-23 14:02:41,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 14:02:41,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-23 14:02:41,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:02:41,369 INFO L225 Difference]: With dead ends: 519 [2021-11-23 14:02:41,369 INFO L226 Difference]: Without dead ends: 300 [2021-11-23 14:02:41,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:02:41,370 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 236 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:02:41,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 774 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:02:41,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-11-23 14:02:41,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 216. [2021-11-23 14:02:41,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 211 states have (on average 1.2180094786729858) internal successors, (257), 215 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:41,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 257 transitions. [2021-11-23 14:02:41,383 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 257 transitions. Word has length 103 [2021-11-23 14:02:41,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:02:41,385 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 257 transitions. [2021-11-23 14:02:41,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:41,385 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 257 transitions. [2021-11-23 14:02:41,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-23 14:02:41,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:02:41,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:02:41,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 14:02:41,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:02:41,601 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:02:41,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:02:41,601 INFO L85 PathProgramCache]: Analyzing trace with hash -122026884, now seen corresponding path program 1 times [2021-11-23 14:02:41,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:02:41,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26887216] [2021-11-23 14:02:41,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:41,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:02:41,616 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:02:41,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1822855444] [2021-11-23 14:02:41,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:41,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:02:41,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:02:41,618 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:02:41,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 14:02:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:02:41,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 14:02:41,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:02:42,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:02:42,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 14:02:42,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:02:42,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26887216] [2021-11-23 14:02:42,186 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:02:42,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822855444] [2021-11-23 14:02:42,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822855444] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:02:42,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:02:42,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:02:42,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356639391] [2021-11-23 14:02:42,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:02:42,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:02:42,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:02:42,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:02:42,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:02:42,189 INFO L87 Difference]: Start difference. First operand 216 states and 257 transitions. Second operand has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:42,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:02:42,244 INFO L93 Difference]: Finished difference Result 382 states and 453 transitions. [2021-11-23 14:02:42,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:02:42,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-23 14:02:42,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:02:42,248 INFO L225 Difference]: With dead ends: 382 [2021-11-23 14:02:42,248 INFO L226 Difference]: Without dead ends: 381 [2021-11-23 14:02:42,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:02:42,251 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 101 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:02:42,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 732 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:02:42,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-11-23 14:02:42,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 379. [2021-11-23 14:02:42,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 374 states have (on average 1.2032085561497325) internal successors, (450), 378 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:42,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 450 transitions. [2021-11-23 14:02:42,283 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 450 transitions. Word has length 103 [2021-11-23 14:02:42,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:02:42,284 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 450 transitions. [2021-11-23 14:02:42,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:42,284 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 450 transitions. [2021-11-23 14:02:42,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-23 14:02:42,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:02:42,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:02:42,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-23 14:02:42,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-23 14:02:42,508 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:02:42,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:02:42,509 INFO L85 PathProgramCache]: Analyzing trace with hash 512134685, now seen corresponding path program 1 times [2021-11-23 14:02:42,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:02:42,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895818055] [2021-11-23 14:02:42,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:42,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:02:42,524 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:02:42,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2019459758] [2021-11-23 14:02:42,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:42,525 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:02:42,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:02:42,535 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:02:42,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 14:02:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:02:42,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 14:02:42,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:02:43,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:02:43,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 14:02:43,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:02:43,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895818055] [2021-11-23 14:02:43,028 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:02:43,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019459758] [2021-11-23 14:02:43,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019459758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:02:43,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:02:43,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:02:43,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695567746] [2021-11-23 14:02:43,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:02:43,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:02:43,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:02:43,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:02:43,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:02:43,031 INFO L87 Difference]: Start difference. First operand 379 states and 450 transitions. Second operand has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:43,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:02:43,065 INFO L93 Difference]: Finished difference Result 379 states and 450 transitions. [2021-11-23 14:02:43,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 14:02:43,066 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-23 14:02:43,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:02:43,068 INFO L225 Difference]: With dead ends: 379 [2021-11-23 14:02:43,068 INFO L226 Difference]: Without dead ends: 378 [2021-11-23 14:02:43,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:02:43,070 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 151 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:02:43,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 484 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:02:43,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-11-23 14:02:43,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2021-11-23 14:02:43,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 374 states have (on average 1.2005347593582887) internal successors, (449), 377 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:43,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 449 transitions. [2021-11-23 14:02:43,089 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 449 transitions. Word has length 104 [2021-11-23 14:02:43,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:02:43,089 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 449 transitions. [2021-11-23 14:02:43,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:43,090 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 449 transitions. [2021-11-23 14:02:43,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-23 14:02:43,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:02:43,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:02:43,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-23 14:02:43,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 14:02:43,316 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:02:43,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:02:43,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1044746806, now seen corresponding path program 1 times [2021-11-23 14:02:43,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:02:43,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472736055] [2021-11-23 14:02:43,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:43,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:02:43,329 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:02:43,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1644033251] [2021-11-23 14:02:43,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:43,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:02:43,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:02:43,331 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:02:43,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-23 14:02:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:02:43,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 14:02:43,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:02:43,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:02:43,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:02:44,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:02:44,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:02:44,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472736055] [2021-11-23 14:02:44,187 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:02:44,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644033251] [2021-11-23 14:02:44,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644033251] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:02:44,188 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:02:44,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-23 14:02:44,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894026351] [2021-11-23 14:02:44,189 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:02:44,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 14:02:44,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:02:44,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 14:02:44,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-23 14:02:44,190 INFO L87 Difference]: Start difference. First operand 378 states and 449 transitions. Second operand has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:44,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:02:44,281 INFO L93 Difference]: Finished difference Result 588 states and 702 transitions. [2021-11-23 14:02:44,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:02:44,289 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-23 14:02:44,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:02:44,293 INFO L225 Difference]: With dead ends: 588 [2021-11-23 14:02:44,293 INFO L226 Difference]: Without dead ends: 548 [2021-11-23 14:02:44,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-23 14:02:44,295 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 1284 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:02:44,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1284 Valid, 920 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:02:44,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-11-23 14:02:44,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2021-11-23 14:02:44,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 544 states have (on average 1.1948529411764706) internal successors, (650), 547 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:44,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 650 transitions. [2021-11-23 14:02:44,324 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 650 transitions. Word has length 108 [2021-11-23 14:02:44,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:02:44,325 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 650 transitions. [2021-11-23 14:02:44,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:44,326 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 650 transitions. [2021-11-23 14:02:44,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-23 14:02:44,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:02:44,327 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:02:44,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-23 14:02:44,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-23 14:02:44,546 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:02:44,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:02:44,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1044059460, now seen corresponding path program 1 times [2021-11-23 14:02:44,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:02:44,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57486360] [2021-11-23 14:02:44,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:44,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:02:44,564 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:02:44,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [987224690] [2021-11-23 14:02:44,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:44,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:02:44,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:02:44,567 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:02:44,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-23 14:02:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:02:44,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 14:02:44,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:02:45,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:02:45,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 14:02:45,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:02:45,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57486360] [2021-11-23 14:02:45,306 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:02:45,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987224690] [2021-11-23 14:02:45,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987224690] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:02:45,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:02:45,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:02:45,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073853378] [2021-11-23 14:02:45,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:02:45,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:02:45,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:02:45,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:02:45,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:02:45,309 INFO L87 Difference]: Start difference. First operand 548 states and 650 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:45,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:02:45,427 INFO L93 Difference]: Finished difference Result 965 states and 1151 transitions. [2021-11-23 14:02:45,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:02:45,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-23 14:02:45,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:02:45,432 INFO L225 Difference]: With dead ends: 965 [2021-11-23 14:02:45,433 INFO L226 Difference]: Without dead ends: 546 [2021-11-23 14:02:45,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:02:45,434 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 59 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:02:45,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 485 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:02:45,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-11-23 14:02:45,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 546. [2021-11-23 14:02:45,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 542 states have (on average 1.1937269372693726) internal successors, (647), 545 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:45,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 647 transitions. [2021-11-23 14:02:45,463 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 647 transitions. Word has length 108 [2021-11-23 14:02:45,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:02:45,464 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 647 transitions. [2021-11-23 14:02:45,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:45,464 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 647 transitions. [2021-11-23 14:02:45,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 14:02:45,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:02:45,466 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:02:45,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-23 14:02:45,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:02:45,692 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:02:45,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:02:45,693 INFO L85 PathProgramCache]: Analyzing trace with hash 910573572, now seen corresponding path program 1 times [2021-11-23 14:02:45,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:02:45,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856651594] [2021-11-23 14:02:45,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:45,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:02:45,707 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:02:45,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1838804008] [2021-11-23 14:02:45,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:45,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:02:45,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:02:45,715 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:02:45,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-23 14:02:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:02:45,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 14:02:45,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:02:46,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:02:46,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 14:02:46,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:02:46,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856651594] [2021-11-23 14:02:46,294 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:02:46,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838804008] [2021-11-23 14:02:46,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838804008] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:02:46,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:02:46,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:02:46,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959628465] [2021-11-23 14:02:46,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:02:46,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:02:46,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:02:46,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:02:46,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:02:46,298 INFO L87 Difference]: Start difference. First operand 546 states and 647 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:46,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:02:46,371 INFO L93 Difference]: Finished difference Result 1041 states and 1240 transitions. [2021-11-23 14:02:46,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:02:46,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 14:02:46,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:02:46,378 INFO L225 Difference]: With dead ends: 1041 [2021-11-23 14:02:46,378 INFO L226 Difference]: Without dead ends: 544 [2021-11-23 14:02:46,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:02:46,380 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 11 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:02:46,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 486 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:02:46,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-11-23 14:02:46,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2021-11-23 14:02:46,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 540 states have (on average 1.1925925925925926) internal successors, (644), 543 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:46,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 644 transitions. [2021-11-23 14:02:46,416 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 644 transitions. Word has length 115 [2021-11-23 14:02:46,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:02:46,417 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 644 transitions. [2021-11-23 14:02:46,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:46,417 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 644 transitions. [2021-11-23 14:02:46,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-23 14:02:46,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:02:46,419 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:02:46,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-23 14:02:46,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:02:46,632 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:02:46,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:02:46,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1714117100, now seen corresponding path program 1 times [2021-11-23 14:02:46,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:02:46,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629029032] [2021-11-23 14:02:46,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:46,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:02:46,649 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:02:46,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1022414527] [2021-11-23 14:02:46,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:46,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:02:46,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:02:46,651 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:02:46,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-23 14:02:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:02:46,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 14:02:46,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:02:47,160 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:02:47,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 14:02:47,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:02:47,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629029032] [2021-11-23 14:02:47,161 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:02:47,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022414527] [2021-11-23 14:02:47,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022414527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:02:47,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:02:47,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:02:47,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225804040] [2021-11-23 14:02:47,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:02:47,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:02:47,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:02:47,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:02:47,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:02:47,163 INFO L87 Difference]: Start difference. First operand 544 states and 644 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:47,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:02:47,223 INFO L93 Difference]: Finished difference Result 1051 states and 1256 transitions. [2021-11-23 14:02:47,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:02:47,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-23 14:02:47,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:02:47,228 INFO L225 Difference]: With dead ends: 1051 [2021-11-23 14:02:47,228 INFO L226 Difference]: Without dead ends: 550 [2021-11-23 14:02:47,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:02:47,230 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 0 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:02:47,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 484 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:02:47,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-11-23 14:02:47,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 550. [2021-11-23 14:02:47,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 546 states have (on average 1.1904761904761905) internal successors, (650), 549 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:47,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 650 transitions. [2021-11-23 14:02:47,254 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 650 transitions. Word has length 122 [2021-11-23 14:02:47,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:02:47,254 INFO L470 AbstractCegarLoop]: Abstraction has 550 states and 650 transitions. [2021-11-23 14:02:47,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:47,255 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 650 transitions. [2021-11-23 14:02:47,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-23 14:02:47,257 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:02:47,257 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:02:47,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-23 14:02:47,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-23 14:02:47,476 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:02:47,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:02:47,477 INFO L85 PathProgramCache]: Analyzing trace with hash -734477308, now seen corresponding path program 1 times [2021-11-23 14:02:47,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:02:47,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297814584] [2021-11-23 14:02:47,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:47,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:02:47,490 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:02:47,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1403456251] [2021-11-23 14:02:47,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:47,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:02:47,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:02:47,491 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:02:47,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-23 14:02:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:02:47,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 14:02:47,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:02:48,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 14:02:48,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:02:48,343 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 14:02:48,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:02:48,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297814584] [2021-11-23 14:02:48,343 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:02:48,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403456251] [2021-11-23 14:02:48,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403456251] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:02:48,344 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:02:48,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-23 14:02:48,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257774922] [2021-11-23 14:02:48,344 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:02:48,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 14:02:48,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:02:48,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 14:02:48,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 14:02:48,346 INFO L87 Difference]: Start difference. First operand 550 states and 650 transitions. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:48,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:02:48,524 INFO L93 Difference]: Finished difference Result 1086 states and 1315 transitions. [2021-11-23 14:02:48,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:02:48,525 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-23 14:02:48,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:02:48,529 INFO L225 Difference]: With dead ends: 1086 [2021-11-23 14:02:48,529 INFO L226 Difference]: Without dead ends: 580 [2021-11-23 14:02:48,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-23 14:02:48,531 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 0 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:02:48,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1184 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:02:48,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-11-23 14:02:48,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2021-11-23 14:02:48,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 576 states have (on average 1.1805555555555556) internal successors, (680), 579 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:48,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 680 transitions. [2021-11-23 14:02:48,560 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 680 transitions. Word has length 124 [2021-11-23 14:02:48,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:02:48,560 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 680 transitions. [2021-11-23 14:02:48,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:48,561 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 680 transitions. [2021-11-23 14:02:48,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-23 14:02:48,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:02:48,563 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:02:48,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-23 14:02:48,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-23 14:02:48,788 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:02:48,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:02:48,789 INFO L85 PathProgramCache]: Analyzing trace with hash 23951316, now seen corresponding path program 1 times [2021-11-23 14:02:48,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:02:48,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956061671] [2021-11-23 14:02:48,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:48,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:02:48,807 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:02:48,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1796933484] [2021-11-23 14:02:48,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:48,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:02:48,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:02:48,823 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:02:48,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-23 14:02:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:02:49,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-23 14:02:49,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:02:49,846 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-23 14:02:49,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:02:50,184 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 14:02:50,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:02:50,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956061671] [2021-11-23 14:02:50,185 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:02:50,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796933484] [2021-11-23 14:02:50,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796933484] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:02:50,185 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:02:50,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2021-11-23 14:02:50,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538591289] [2021-11-23 14:02:50,186 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:02:50,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 14:02:50,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:02:50,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 14:02:50,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-23 14:02:50,187 INFO L87 Difference]: Start difference. First operand 580 states and 680 transitions. Second operand has 16 states, 16 states have (on average 8.875) internal successors, (142), 16 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:52,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:02:52,232 INFO L93 Difference]: Finished difference Result 3350 states and 3988 transitions. [2021-11-23 14:02:52,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-23 14:02:52,233 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.875) internal successors, (142), 16 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-11-23 14:02:52,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:02:52,251 INFO L225 Difference]: With dead ends: 3350 [2021-11-23 14:02:52,252 INFO L226 Difference]: Without dead ends: 2822 [2021-11-23 14:02:52,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=1077, Unknown=0, NotChecked=0, Total=1260 [2021-11-23 14:02:52,258 INFO L933 BasicCegarLoop]: 1280 mSDtfsCounter, 3335 mSDsluCounter, 10909 mSDsCounter, 0 mSdLazyCounter, 1539 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3335 SdHoareTripleChecker+Valid, 12189 SdHoareTripleChecker+Invalid, 1660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-23 14:02:52,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3335 Valid, 12189 Invalid, 1660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1539 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-23 14:02:52,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2021-11-23 14:02:52,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 604. [2021-11-23 14:02:52,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 600 states have (on average 1.1733333333333333) internal successors, (704), 603 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:52,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 704 transitions. [2021-11-23 14:02:52,327 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 704 transitions. Word has length 134 [2021-11-23 14:02:52,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:02:52,327 INFO L470 AbstractCegarLoop]: Abstraction has 604 states and 704 transitions. [2021-11-23 14:02:52,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.875) internal successors, (142), 16 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:52,328 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 704 transitions. [2021-11-23 14:02:52,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-23 14:02:52,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:02:52,330 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:02:52,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-23 14:02:52,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-23 14:02:52,556 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:02:52,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:02:52,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1224033964, now seen corresponding path program 2 times [2021-11-23 14:02:52,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:02:52,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791274501] [2021-11-23 14:02:52,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:52,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:02:52,570 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:02:52,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [377495725] [2021-11-23 14:02:52,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 14:02:52,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:02:52,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:02:52,572 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:02:52,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-23 14:02:53,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 14:02:53,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:02:53,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-23 14:02:53,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:02:53,858 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-23 14:02:53,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:02:54,128 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-23 14:02:54,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:02:54,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791274501] [2021-11-23 14:02:54,128 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:02:54,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377495725] [2021-11-23 14:02:54,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377495725] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:02:54,129 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:02:54,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-11-23 14:02:54,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567949196] [2021-11-23 14:02:54,129 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:02:54,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 14:02:54,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:02:54,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 14:02:54,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-23 14:02:54,132 INFO L87 Difference]: Start difference. First operand 604 states and 704 transitions. Second operand has 13 states, 13 states have (on average 10.538461538461538) internal successors, (137), 13 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:55,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:02:55,327 INFO L93 Difference]: Finished difference Result 1197 states and 1432 transitions. [2021-11-23 14:02:55,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 14:02:55,328 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.538461538461538) internal successors, (137), 13 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-11-23 14:02:55,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:02:55,332 INFO L225 Difference]: With dead ends: 1197 [2021-11-23 14:02:55,333 INFO L226 Difference]: Without dead ends: 640 [2021-11-23 14:02:55,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2021-11-23 14:02:55,335 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 249 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 14:02:55,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 1632 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 14:02:55,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-11-23 14:02:55,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2021-11-23 14:02:55,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 636 states have (on average 1.1635220125786163) internal successors, (740), 639 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:55,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 740 transitions. [2021-11-23 14:02:55,384 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 740 transitions. Word has length 142 [2021-11-23 14:02:55,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:02:55,385 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 740 transitions. [2021-11-23 14:02:55,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.538461538461538) internal successors, (137), 13 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:55,385 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 740 transitions. [2021-11-23 14:02:55,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-23 14:02:55,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:02:55,388 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:02:55,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-23 14:02:55,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-23 14:02:55,596 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:02:55,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:02:55,597 INFO L85 PathProgramCache]: Analyzing trace with hash 16999124, now seen corresponding path program 3 times [2021-11-23 14:02:55,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:02:55,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467728348] [2021-11-23 14:02:55,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:55,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:02:55,629 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:02:55,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1837723535] [2021-11-23 14:02:55,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 14:02:55,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:02:55,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:02:55,631 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:02:55,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-23 14:02:56,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-23 14:02:56,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:02:56,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 14:02:56,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:02:56,311 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-11-23 14:02:56,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:02:57,600 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-11-23 14:02:57,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:02:57,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467728348] [2021-11-23 14:02:57,601 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:02:57,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837723535] [2021-11-23 14:02:57,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837723535] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 14:02:57,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 14:02:57,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2021-11-23 14:02:57,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769993751] [2021-11-23 14:02:57,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:02:57,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 14:02:57,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:02:57,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 14:02:57,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-23 14:02:57,607 INFO L87 Difference]: Start difference. First operand 640 states and 740 transitions. Second operand has 6 states, 5 states have (on average 25.2) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:57,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:02:57,704 INFO L93 Difference]: Finished difference Result 640 states and 740 transitions. [2021-11-23 14:02:57,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:02:57,705 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 25.2) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-11-23 14:02:57,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:02:57,710 INFO L225 Difference]: With dead ends: 640 [2021-11-23 14:02:57,710 INFO L226 Difference]: Without dead ends: 639 [2021-11-23 14:02:57,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-23 14:02:57,712 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 300 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:02:57,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 534 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:02:57,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-11-23 14:02:57,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 639. [2021-11-23 14:02:57,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 636 states have (on average 1.1603773584905661) internal successors, (738), 638 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:57,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 738 transitions. [2021-11-23 14:02:57,772 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 738 transitions. Word has length 154 [2021-11-23 14:02:57,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:02:57,772 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 738 transitions. [2021-11-23 14:02:57,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 25.2) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:02:57,773 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 738 transitions. [2021-11-23 14:02:57,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2021-11-23 14:02:57,779 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:02:57,779 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:02:57,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-23 14:02:57,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:02:57,986 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:02:57,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:02:57,986 INFO L85 PathProgramCache]: Analyzing trace with hash -648964554, now seen corresponding path program 1 times [2021-11-23 14:02:57,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:02:57,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818738860] [2021-11-23 14:02:57,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:57,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:02:58,015 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:02:58,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1056327393] [2021-11-23 14:02:58,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:58,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:02:58,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:02:58,018 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:02:58,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-23 14:02:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:02:58,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 1140 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 14:02:58,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:02:59,213 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-11-23 14:02:59,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:03:00,156 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-11-23 14:03:00,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:03:00,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818738860] [2021-11-23 14:03:00,157 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:03:00,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056327393] [2021-11-23 14:03:00,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056327393] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:03:00,157 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:03:00,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-11-23 14:03:00,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752774587] [2021-11-23 14:03:00,158 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:03:00,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 14:03:00,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:03:00,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 14:03:00,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-23 14:03:00,162 INFO L87 Difference]: Start difference. First operand 639 states and 738 transitions. Second operand has 14 states, 13 states have (on average 49.92307692307692) internal successors, (649), 14 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:00,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:03:00,333 INFO L93 Difference]: Finished difference Result 878 states and 1019 transitions. [2021-11-23 14:03:00,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 14:03:00,336 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 49.92307692307692) internal successors, (649), 14 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 353 [2021-11-23 14:03:00,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:03:00,342 INFO L225 Difference]: With dead ends: 878 [2021-11-23 14:03:00,343 INFO L226 Difference]: Without dead ends: 877 [2021-11-23 14:03:00,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 708 GetRequests, 692 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-11-23 14:03:00,345 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 1279 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:03:00,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1279 Valid, 1396 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:03:00,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2021-11-23 14:03:00,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 638. [2021-11-23 14:03:00,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 636 states have (on average 1.1588050314465408) internal successors, (737), 637 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:00,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 737 transitions. [2021-11-23 14:03:00,400 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 737 transitions. Word has length 353 [2021-11-23 14:03:00,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:03:00,401 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 737 transitions. [2021-11-23 14:03:00,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 49.92307692307692) internal successors, (649), 14 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:00,402 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 737 transitions. [2021-11-23 14:03:00,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2021-11-23 14:03:00,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:03:00,408 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:03:00,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-23 14:03:00,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:03:00,624 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:03:00,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:03:00,625 INFO L85 PathProgramCache]: Analyzing trace with hash -802814788, now seen corresponding path program 1 times [2021-11-23 14:03:00,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:03:00,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968262701] [2021-11-23 14:03:00,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:03:00,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:03:00,662 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:03:00,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1309918124] [2021-11-23 14:03:00,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:03:00,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:03:00,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:03:00,666 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:03:00,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-23 14:03:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:03:01,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 1164 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 14:03:01,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:03:01,879 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-11-23 14:03:01,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:03:02,789 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-11-23 14:03:02,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:03:02,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968262701] [2021-11-23 14:03:02,790 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:03:02,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309918124] [2021-11-23 14:03:02,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309918124] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:03:02,791 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:03:02,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-11-23 14:03:02,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142385289] [2021-11-23 14:03:02,792 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:03:02,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 14:03:02,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:03:02,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 14:03:02,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-11-23 14:03:02,795 INFO L87 Difference]: Start difference. First operand 638 states and 737 transitions. Second operand has 16 states, 16 states have (on average 41.0) internal successors, (656), 16 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:03,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:03:03,117 INFO L93 Difference]: Finished difference Result 1477 states and 1710 transitions. [2021-11-23 14:03:03,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 14:03:03,118 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 41.0) internal successors, (656), 16 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 358 [2021-11-23 14:03:03,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:03:03,128 INFO L225 Difference]: With dead ends: 1477 [2021-11-23 14:03:03,129 INFO L226 Difference]: Without dead ends: 1438 [2021-11-23 14:03:03,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 700 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2021-11-23 14:03:03,132 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 1643 mSDsluCounter, 2314 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1643 SdHoareTripleChecker+Valid, 2557 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:03:03,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1643 Valid, 2557 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:03:03,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2021-11-23 14:03:03,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1438. [2021-11-23 14:03:03,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1436 states have (on average 1.1538997214484679) internal successors, (1657), 1437 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:03,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 1657 transitions. [2021-11-23 14:03:03,305 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 1657 transitions. Word has length 358 [2021-11-23 14:03:03,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:03:03,306 INFO L470 AbstractCegarLoop]: Abstraction has 1438 states and 1657 transitions. [2021-11-23 14:03:03,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 41.0) internal successors, (656), 16 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:03,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 1657 transitions. [2021-11-23 14:03:03,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2021-11-23 14:03:03,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:03:03,335 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:03:03,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-23 14:03:03,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2021-11-23 14:03:03,556 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:03:03,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:03:03,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1322886232, now seen corresponding path program 2 times [2021-11-23 14:03:03,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:03:03,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801990961] [2021-11-23 14:03:03,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:03:03,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:03:03,602 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:03:03,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938828925] [2021-11-23 14:03:03,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 14:03:03,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:03:03,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:03:03,604 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:03:03,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-23 14:03:03,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-23 14:03:03,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:03:03,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 14:03:03,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:03:05,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2277 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2277 trivial. 0 not checked. [2021-11-23 14:03:05,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 14:03:05,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:03:05,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801990961] [2021-11-23 14:03:05,521 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:03:05,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938828925] [2021-11-23 14:03:05,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938828925] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:03:05,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:03:05,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:03:05,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351845965] [2021-11-23 14:03:05,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:03:05,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:03:05,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:03:05,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:03:05,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:03:05,527 INFO L87 Difference]: Start difference. First operand 1438 states and 1657 transitions. Second operand has 4 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:05,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:03:05,718 INFO L93 Difference]: Finished difference Result 1474 states and 1703 transitions. [2021-11-23 14:03:05,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:03:05,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 766 [2021-11-23 14:03:05,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:03:05,728 INFO L225 Difference]: With dead ends: 1474 [2021-11-23 14:03:05,728 INFO L226 Difference]: Without dead ends: 1473 [2021-11-23 14:03:05,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 763 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:03:05,730 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 117 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:03:05,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 509 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:03:05,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2021-11-23 14:03:05,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1440. [2021-11-23 14:03:05,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1438 states have (on average 1.1536856745479833) internal successors, (1659), 1439 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:05,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 1659 transitions. [2021-11-23 14:03:05,867 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 1659 transitions. Word has length 766 [2021-11-23 14:03:05,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:03:05,868 INFO L470 AbstractCegarLoop]: Abstraction has 1440 states and 1659 transitions. [2021-11-23 14:03:05,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:05,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 1659 transitions. [2021-11-23 14:03:05,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2021-11-23 14:03:05,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:03:05,877 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:03:05,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-23 14:03:06,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:03:06,096 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:03:06,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:03:06,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1940200577, now seen corresponding path program 1 times [2021-11-23 14:03:06,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:03:06,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470392964] [2021-11-23 14:03:06,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:03:06,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:03:06,139 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:03:06,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1436225279] [2021-11-23 14:03:06,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:03:06,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:03:06,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:03:06,142 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:03:06,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-23 14:03:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:03:06,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 2165 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-23 14:03:06,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:03:08,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2277 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-11-23 14:03:08,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:03:10,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2277 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-11-23 14:03:10,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:03:10,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470392964] [2021-11-23 14:03:10,305 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:03:10,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436225279] [2021-11-23 14:03:10,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436225279] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:03:10,305 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:03:10,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2021-11-23 14:03:10,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144719480] [2021-11-23 14:03:10,306 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:03:10,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 14:03:10,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:03:10,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 14:03:10,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-11-23 14:03:10,310 INFO L87 Difference]: Start difference. First operand 1440 states and 1659 transitions. Second operand has 21 states, 21 states have (on average 46.142857142857146) internal successors, (969), 21 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:10,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:03:10,785 INFO L93 Difference]: Finished difference Result 2081 states and 2403 transitions. [2021-11-23 14:03:10,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 14:03:10,786 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 46.142857142857146) internal successors, (969), 21 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 767 [2021-11-23 14:03:10,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:03:10,800 INFO L225 Difference]: With dead ends: 2081 [2021-11-23 14:03:10,800 INFO L226 Difference]: Without dead ends: 2040 [2021-11-23 14:03:10,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1541 GetRequests, 1512 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2021-11-23 14:03:10,803 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 3680 mSDsluCounter, 2838 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3680 SdHoareTripleChecker+Valid, 3081 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:03:10,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3680 Valid, 3081 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:03:10,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2021-11-23 14:03:10,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 2040. [2021-11-23 14:03:10,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2040 states, 2038 states have (on average 1.1526005888125614) internal successors, (2349), 2039 states have internal predecessors, (2349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:10,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2040 states to 2040 states and 2349 transitions. [2021-11-23 14:03:10,962 INFO L78 Accepts]: Start accepts. Automaton has 2040 states and 2349 transitions. Word has length 767 [2021-11-23 14:03:10,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:03:10,963 INFO L470 AbstractCegarLoop]: Abstraction has 2040 states and 2349 transitions. [2021-11-23 14:03:10,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 46.142857142857146) internal successors, (969), 21 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:10,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2040 states and 2349 transitions. [2021-11-23 14:03:11,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1074 [2021-11-23 14:03:11,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:03:11,003 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:03:11,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-23 14:03:11,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:03:11,204 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:03:11,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:03:11,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1997896208, now seen corresponding path program 2 times [2021-11-23 14:03:11,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:03:11,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201306354] [2021-11-23 14:03:11,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:03:11,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:03:11,268 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:03:11,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1438942018] [2021-11-23 14:03:11,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 14:03:11,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:03:11,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:03:11,270 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:03:11,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-23 14:03:11,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-23 14:03:11,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:03:11,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 14:03:11,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:03:14,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4716 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4716 trivial. 0 not checked. [2021-11-23 14:03:14,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 14:03:14,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:03:14,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201306354] [2021-11-23 14:03:14,003 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:03:14,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438942018] [2021-11-23 14:03:14,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438942018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:03:14,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:03:14,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:03:14,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10276196] [2021-11-23 14:03:14,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:03:14,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:03:14,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:03:14,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:03:14,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:03:14,008 INFO L87 Difference]: Start difference. First operand 2040 states and 2349 transitions. Second operand has 4 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:14,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:03:14,176 INFO L93 Difference]: Finished difference Result 2040 states and 2349 transitions. [2021-11-23 14:03:14,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 14:03:14,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1073 [2021-11-23 14:03:14,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:03:14,193 INFO L225 Difference]: With dead ends: 2040 [2021-11-23 14:03:14,193 INFO L226 Difference]: Without dead ends: 2039 [2021-11-23 14:03:14,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1073 GetRequests, 1070 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:03:14,195 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 159 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:03:14,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 440 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:03:14,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2039 states. [2021-11-23 14:03:14,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2039 to 2039. [2021-11-23 14:03:14,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2039 states, 2038 states have (on average 1.1521099116781157) internal successors, (2348), 2038 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:14,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 2348 transitions. [2021-11-23 14:03:14,429 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 2348 transitions. Word has length 1073 [2021-11-23 14:03:14,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:03:14,432 INFO L470 AbstractCegarLoop]: Abstraction has 2039 states and 2348 transitions. [2021-11-23 14:03:14,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:14,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 2348 transitions. [2021-11-23 14:03:14,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2021-11-23 14:03:14,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:03:14,447 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:03:14,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-23 14:03:14,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-23 14:03:14,672 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:03:14,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:03:14,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1858506601, now seen corresponding path program 1 times [2021-11-23 14:03:14,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:03:14,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455221642] [2021-11-23 14:03:14,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:03:14,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:03:14,712 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:03:14,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [287907591] [2021-11-23 14:03:14,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:03:14,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:03:14,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:03:14,714 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:03:14,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-23 14:03:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:03:15,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 2947 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 14:03:15,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:03:18,001 INFO L134 CoverageAnalysis]: Checked inductivity of 4718 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4716 trivial. 0 not checked. [2021-11-23 14:03:18,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:03:20,540 INFO L134 CoverageAnalysis]: Checked inductivity of 4718 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4716 trivial. 0 not checked. [2021-11-23 14:03:20,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:03:20,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455221642] [2021-11-23 14:03:20,541 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:03:20,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287907591] [2021-11-23 14:03:20,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287907591] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:03:20,542 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:03:20,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-11-23 14:03:20,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185885281] [2021-11-23 14:03:20,543 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:03:20,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 14:03:20,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:03:20,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 14:03:20,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-23 14:03:20,547 INFO L87 Difference]: Start difference. First operand 2039 states and 2348 transitions. Second operand has 10 states, 9 states have (on average 31.333333333333332) internal successors, (282), 9 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:20,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:03:20,845 INFO L93 Difference]: Finished difference Result 2149 states and 2490 transitions. [2021-11-23 14:03:20,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 14:03:20,846 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 31.333333333333332) internal successors, (282), 9 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1081 [2021-11-23 14:03:20,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:03:20,859 INFO L225 Difference]: With dead ends: 2149 [2021-11-23 14:03:20,859 INFO L226 Difference]: Without dead ends: 2148 [2021-11-23 14:03:20,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2167 GetRequests, 2152 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2021-11-23 14:03:20,861 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 827 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:03:20,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 674 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:03:20,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2021-11-23 14:03:21,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 2147. [2021-11-23 14:03:21,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 2146 states have (on average 1.158434296365331) internal successors, (2486), 2146 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:21,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 2486 transitions. [2021-11-23 14:03:21,041 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 2486 transitions. Word has length 1081 [2021-11-23 14:03:21,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:03:21,043 INFO L470 AbstractCegarLoop]: Abstraction has 2147 states and 2486 transitions. [2021-11-23 14:03:21,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 31.333333333333332) internal successors, (282), 9 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:21,043 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 2486 transitions. [2021-11-23 14:03:21,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1109 [2021-11-23 14:03:21,057 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:03:21,058 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:03:21,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-23 14:03:21,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-23 14:03:21,273 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:03:21,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:03:21,274 INFO L85 PathProgramCache]: Analyzing trace with hash -284476359, now seen corresponding path program 2 times [2021-11-23 14:03:21,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:03:21,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19299359] [2021-11-23 14:03:21,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:03:21,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:03:21,347 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:03:21,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [360634678] [2021-11-23 14:03:21,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 14:03:21,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:03:21,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:03:21,349 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:03:21,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-23 14:03:22,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 14:03:22,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:03:22,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 3046 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 14:03:22,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:03:24,788 INFO L134 CoverageAnalysis]: Checked inductivity of 4778 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 4716 trivial. 0 not checked. [2021-11-23 14:03:24,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:03:27,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4778 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 4716 trivial. 0 not checked. [2021-11-23 14:03:27,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:03:27,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19299359] [2021-11-23 14:03:27,340 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:03:27,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360634678] [2021-11-23 14:03:27,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360634678] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:03:27,340 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:03:27,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-11-23 14:03:27,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310105950] [2021-11-23 14:03:27,342 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:03:27,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-23 14:03:27,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:03:27,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-23 14:03:27,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-11-23 14:03:27,346 INFO L87 Difference]: Start difference. First operand 2147 states and 2486 transitions. Second operand has 22 states, 21 states have (on average 16.0) internal successors, (336), 21 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:28,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:03:28,010 INFO L93 Difference]: Finished difference Result 2365 states and 2769 transitions. [2021-11-23 14:03:28,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-23 14:03:28,011 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 16.0) internal successors, (336), 21 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1108 [2021-11-23 14:03:28,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:03:28,028 INFO L225 Difference]: With dead ends: 2365 [2021-11-23 14:03:28,029 INFO L226 Difference]: Without dead ends: 2364 [2021-11-23 14:03:28,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2233 GetRequests, 2194 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=549, Invalid=1091, Unknown=0, NotChecked=0, Total=1640 [2021-11-23 14:03:28,031 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 1825 mSDsluCounter, 1440 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1825 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 14:03:28,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1825 Valid, 1677 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 14:03:28,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2364 states. [2021-11-23 14:03:28,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2364 to 2363. [2021-11-23 14:03:28,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 2362 states have (on average 1.1693480101608806) internal successors, (2762), 2362 states have internal predecessors, (2762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:28,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 2762 transitions. [2021-11-23 14:03:28,242 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 2762 transitions. Word has length 1108 [2021-11-23 14:03:28,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:03:28,243 INFO L470 AbstractCegarLoop]: Abstraction has 2363 states and 2762 transitions. [2021-11-23 14:03:28,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 16.0) internal successors, (336), 21 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:28,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 2762 transitions. [2021-11-23 14:03:28,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1163 [2021-11-23 14:03:28,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:03:28,265 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:03:28,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-23 14:03:28,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-23 14:03:28,481 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:03:28,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:03:28,482 INFO L85 PathProgramCache]: Analyzing trace with hash -501088711, now seen corresponding path program 3 times [2021-11-23 14:03:28,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:03:28,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001376456] [2021-11-23 14:03:28,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:03:28,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:03:28,548 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:03:28,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349389935] [2021-11-23 14:03:28,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 14:03:28,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:03:28,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:03:28,550 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:03:28,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-23 14:03:28,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-23 14:03:28,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:03:28,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 14:03:28,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:03:30,460 INFO L134 CoverageAnalysis]: Checked inductivity of 5141 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 5067 trivial. 0 not checked. [2021-11-23 14:03:30,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 14:03:30,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:03:30,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001376456] [2021-11-23 14:03:30,461 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:03:30,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349389935] [2021-11-23 14:03:30,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349389935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:03:30,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:03:30,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 14:03:30,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602779217] [2021-11-23 14:03:30,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:03:30,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 14:03:30,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:03:30,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 14:03:30,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:03:30,466 INFO L87 Difference]: Start difference. First operand 2363 states and 2762 transitions. Second operand has 5 states, 4 states have (on average 37.0) internal successors, (148), 5 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:30,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:03:30,694 INFO L93 Difference]: Finished difference Result 2730 states and 3219 transitions. [2021-11-23 14:03:30,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:03:30,695 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 37.0) internal successors, (148), 5 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1162 [2021-11-23 14:03:30,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:03:30,714 INFO L225 Difference]: With dead ends: 2730 [2021-11-23 14:03:30,714 INFO L226 Difference]: Without dead ends: 2729 [2021-11-23 14:03:30,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1165 GetRequests, 1160 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-23 14:03:30,716 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 262 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:03:30,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 516 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:03:30,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2021-11-23 14:03:30,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 2633. [2021-11-23 14:03:30,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2633 states, 2632 states have (on average 1.1861702127659575) internal successors, (3122), 2632 states have internal predecessors, (3122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:30,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 3122 transitions. [2021-11-23 14:03:30,994 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 3122 transitions. Word has length 1162 [2021-11-23 14:03:30,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:03:30,997 INFO L470 AbstractCegarLoop]: Abstraction has 2633 states and 3122 transitions. [2021-11-23 14:03:30,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 37.0) internal successors, (148), 5 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:30,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 3122 transitions. [2021-11-23 14:03:31,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1164 [2021-11-23 14:03:31,029 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:03:31,030 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:03:31,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-23 14:03:31,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:03:31,244 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:03:31,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:03:31,245 INFO L85 PathProgramCache]: Analyzing trace with hash -705925214, now seen corresponding path program 1 times [2021-11-23 14:03:31,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:03:31,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439325200] [2021-11-23 14:03:31,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:03:31,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:03:31,282 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:03:31,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1909278935] [2021-11-23 14:03:31,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:03:31,283 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:03:31,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:03:31,287 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:03:31,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-23 14:03:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:03:32,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 3246 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-23 14:03:32,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:03:34,905 INFO L134 CoverageAnalysis]: Checked inductivity of 5123 backedges. 0 proven. 407 refuted. 0 times theorem prover too weak. 4716 trivial. 0 not checked. [2021-11-23 14:03:34,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:03:37,947 INFO L134 CoverageAnalysis]: Checked inductivity of 5123 backedges. 0 proven. 407 refuted. 0 times theorem prover too weak. 4716 trivial. 0 not checked. [2021-11-23 14:03:37,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:03:37,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439325200] [2021-11-23 14:03:37,948 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:03:37,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909278935] [2021-11-23 14:03:37,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909278935] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:03:37,948 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:03:37,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 44 [2021-11-23 14:03:37,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884697895] [2021-11-23 14:03:37,949 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:03:37,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-23 14:03:37,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:03:37,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-23 14:03:37,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2021-11-23 14:03:37,952 INFO L87 Difference]: Start difference. First operand 2633 states and 3122 transitions. Second operand has 46 states, 45 states have (on average 9.911111111111111) internal successors, (446), 45 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:39,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:03:39,583 INFO L93 Difference]: Finished difference Result 3475 states and 4215 transitions. [2021-11-23 14:03:39,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-11-23 14:03:39,584 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 9.911111111111111) internal successors, (446), 45 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1163 [2021-11-23 14:03:39,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:03:39,604 INFO L225 Difference]: With dead ends: 3475 [2021-11-23 14:03:39,604 INFO L226 Difference]: Without dead ends: 3474 [2021-11-23 14:03:39,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2367 GetRequests, 2280 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1615 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2529, Invalid=5303, Unknown=0, NotChecked=0, Total=7832 [2021-11-23 14:03:39,609 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 4895 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4895 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 14:03:39,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4895 Valid, 2253 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 14:03:39,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3474 states. [2021-11-23 14:03:39,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3474 to 3449. [2021-11-23 14:03:39,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3449 states, 3448 states have (on average 1.2117169373549883) internal successors, (4178), 3448 states have internal predecessors, (4178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:39,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3449 states to 3449 states and 4178 transitions. [2021-11-23 14:03:39,860 INFO L78 Accepts]: Start accepts. Automaton has 3449 states and 4178 transitions. Word has length 1163 [2021-11-23 14:03:39,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:03:39,862 INFO L470 AbstractCegarLoop]: Abstraction has 3449 states and 4178 transitions. [2021-11-23 14:03:39,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 9.911111111111111) internal successors, (446), 45 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:39,863 INFO L276 IsEmpty]: Start isEmpty. Operand 3449 states and 4178 transitions. [2021-11-23 14:03:39,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1272 [2021-11-23 14:03:39,886 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:03:39,887 INFO L514 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 21, 21, 21, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:03:39,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-23 14:03:40,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-23 14:03:40,113 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:03:40,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:03:40,113 INFO L85 PathProgramCache]: Analyzing trace with hash -605033566, now seen corresponding path program 2 times [2021-11-23 14:03:40,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:03:40,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720833205] [2021-11-23 14:03:40,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:03:40,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:03:40,174 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:03:40,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1994853632] [2021-11-23 14:03:40,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 14:03:40,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:03:40,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:03:40,176 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:03:40,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-23 14:03:41,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 14:03:41,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:03:41,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 3642 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-23 14:03:41,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:03:44,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6797 backedges. 0 proven. 2081 refuted. 0 times theorem prover too weak. 4716 trivial. 0 not checked. [2021-11-23 14:03:44,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:03:49,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6797 backedges. 0 proven. 2081 refuted. 0 times theorem prover too weak. 4716 trivial. 0 not checked. [2021-11-23 14:03:49,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:03:49,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720833205] [2021-11-23 14:03:49,271 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:03:49,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994853632] [2021-11-23 14:03:49,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994853632] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:03:49,271 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:03:49,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 92 [2021-11-23 14:03:49,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398404794] [2021-11-23 14:03:49,273 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:03:49,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-11-23 14:03:49,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:03:49,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-11-23 14:03:49,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2021-11-23 14:03:49,279 INFO L87 Difference]: Start difference. First operand 3449 states and 4178 transitions. Second operand has 94 states, 93 states have (on average 7.118279569892473) internal successors, (662), 93 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:55,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:03:55,685 INFO L93 Difference]: Finished difference Result 5107 states and 6339 transitions. [2021-11-23 14:03:55,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2021-11-23 14:03:55,686 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 7.118279569892473) internal successors, (662), 93 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1271 [2021-11-23 14:03:55,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:03:55,698 INFO L225 Difference]: With dead ends: 5107 [2021-11-23 14:03:55,699 INFO L226 Difference]: Without dead ends: 5106 [2021-11-23 14:03:55,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2631 GetRequests, 2448 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7507 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=10809, Invalid=23231, Unknown=0, NotChecked=0, Total=34040 [2021-11-23 14:03:55,711 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 13236 mSDsluCounter, 3984 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13236 SdHoareTripleChecker+Valid, 4221 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 14:03:55,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13236 Valid, 4221 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 14:03:55,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5106 states. [2021-11-23 14:03:55,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5106 to 5081. [2021-11-23 14:03:55,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5081 states, 5080 states have (on average 1.2381889763779528) internal successors, (6290), 5080 states have internal predecessors, (6290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:55,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5081 states to 5081 states and 6290 transitions. [2021-11-23 14:03:55,931 INFO L78 Accepts]: Start accepts. Automaton has 5081 states and 6290 transitions. Word has length 1271 [2021-11-23 14:03:55,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:03:55,933 INFO L470 AbstractCegarLoop]: Abstraction has 5081 states and 6290 transitions. [2021-11-23 14:03:55,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 7.118279569892473) internal successors, (662), 93 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:55,933 INFO L276 IsEmpty]: Start isEmpty. Operand 5081 states and 6290 transitions. [2021-11-23 14:03:55,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1488 [2021-11-23 14:03:55,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:03:55,963 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 45, 45, 45, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:03:56,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-23 14:03:56,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-23 14:03:56,177 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:03:56,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:03:56,177 INFO L85 PathProgramCache]: Analyzing trace with hash 578347938, now seen corresponding path program 3 times [2021-11-23 14:03:56,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:03:56,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367527402] [2021-11-23 14:03:56,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:03:56,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:03:56,232 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:03:56,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1484214213] [2021-11-23 14:03:56,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 14:03:56,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:03:56,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:03:56,234 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:03:56,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-23 14:03:56,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-23 14:03:56,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:03:56,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 14:03:56,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:03:58,360 INFO L134 CoverageAnalysis]: Checked inductivity of 14033 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 13761 trivial. 0 not checked. [2021-11-23 14:03:58,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 14:03:58,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:03:58,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367527402] [2021-11-23 14:03:58,361 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:03:58,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484214213] [2021-11-23 14:03:58,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484214213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:03:58,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:03:58,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:03:58,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343448260] [2021-11-23 14:03:58,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:03:58,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 14:03:58,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:03:58,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 14:03:58,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 14:03:58,366 INFO L87 Difference]: Start difference. First operand 5081 states and 6290 transitions. Second operand has 6 states, 5 states have (on average 29.8) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:58,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:03:58,675 INFO L93 Difference]: Finished difference Result 8397 states and 10506 transitions. [2021-11-23 14:03:58,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 14:03:58,676 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 29.8) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1487 [2021-11-23 14:03:58,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:03:58,691 INFO L225 Difference]: With dead ends: 8397 [2021-11-23 14:03:58,691 INFO L226 Difference]: Without dead ends: 8396 [2021-11-23 14:03:58,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1495 GetRequests, 1486 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-23 14:03:58,695 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 566 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:03:58,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [566 Valid, 680 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:03:58,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8396 states. [2021-11-23 14:03:58,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8396 to 6415. [2021-11-23 14:03:58,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6415 states, 6414 states have (on average 1.258808855628313) internal successors, (8074), 6414 states have internal predecessors, (8074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:59,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6415 states to 6415 states and 8074 transitions. [2021-11-23 14:03:59,003 INFO L78 Accepts]: Start accepts. Automaton has 6415 states and 8074 transitions. Word has length 1487 [2021-11-23 14:03:59,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:03:59,005 INFO L470 AbstractCegarLoop]: Abstraction has 6415 states and 8074 transitions. [2021-11-23 14:03:59,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 29.8) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:03:59,006 INFO L276 IsEmpty]: Start isEmpty. Operand 6415 states and 8074 transitions. [2021-11-23 14:03:59,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1490 [2021-11-23 14:03:59,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:03:59,053 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 44, 44, 44, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:03:59,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-11-23 14:03:59,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-23 14:03:59,254 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:03:59,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:03:59,255 INFO L85 PathProgramCache]: Analyzing trace with hash -180465116, now seen corresponding path program 1 times [2021-11-23 14:03:59,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:03:59,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142569856] [2021-11-23 14:03:59,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:03:59,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:03:59,319 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:03:59,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747271977] [2021-11-23 14:03:59,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:03:59,320 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:03:59,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:03:59,321 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:03:59,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-23 14:04:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:04:00,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 4438 conjuncts, 95 conjunts are in the unsatisfiable core [2021-11-23 14:04:00,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:04:06,145 INFO L134 CoverageAnalysis]: Checked inductivity of 13946 backedges. 0 proven. 9230 refuted. 0 times theorem prover too weak. 4716 trivial. 0 not checked. [2021-11-23 14:04:06,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:04:16,201 INFO L134 CoverageAnalysis]: Checked inductivity of 13946 backedges. 0 proven. 9230 refuted. 0 times theorem prover too weak. 4716 trivial. 0 not checked. [2021-11-23 14:04:16,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:04:16,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142569856] [2021-11-23 14:04:16,202 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:04:16,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747271977] [2021-11-23 14:04:16,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747271977] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:04:16,203 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:04:16,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 188 [2021-11-23 14:04:16,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717328719] [2021-11-23 14:04:16,205 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:04:16,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2021-11-23 14:04:16,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:04:16,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2021-11-23 14:04:16,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910 [2021-11-23 14:04:16,218 INFO L87 Difference]: Start difference. First operand 6415 states and 8074 transitions. Second operand has 190 states, 189 states have (on average 5.809523809523809) internal successors, (1098), 189 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:04:56,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:04:56,327 INFO L93 Difference]: Finished difference Result 11167 states and 14313 transitions. [2021-11-23 14:04:56,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2021-11-23 14:04:56,328 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 5.809523809523809) internal successors, (1098), 189 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1489 [2021-11-23 14:04:56,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:04:56,351 INFO L225 Difference]: With dead ends: 11167 [2021-11-23 14:04:56,351 INFO L226 Difference]: Without dead ends: 11166 [2021-11-23 14:04:56,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3163 GetRequests, 2788 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32251 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=44649, Invalid=97103, Unknown=0, NotChecked=0, Total=141752 [2021-11-23 14:04:56,373 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 28596 mSDsluCounter, 7512 mSDsCounter, 0 mSdLazyCounter, 2270 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28596 SdHoareTripleChecker+Valid, 7749 SdHoareTripleChecker+Invalid, 2628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 2270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:04:56,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28596 Valid, 7749 Invalid, 2628 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [358 Valid, 2270 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-23 14:04:56,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11166 states. [2021-11-23 14:04:56,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11166 to 11119. [2021-11-23 14:04:56,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11119 states, 11118 states have (on average 1.2788271271811478) internal successors, (14218), 11118 states have internal predecessors, (14218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:04:56,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11119 states to 11119 states and 14218 transitions. [2021-11-23 14:04:56,963 INFO L78 Accepts]: Start accepts. Automaton has 11119 states and 14218 transitions. Word has length 1489 [2021-11-23 14:04:56,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:04:56,965 INFO L470 AbstractCegarLoop]: Abstraction has 11119 states and 14218 transitions. [2021-11-23 14:04:56,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 189 states have (on average 5.809523809523809) internal successors, (1098), 189 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:04:56,966 INFO L276 IsEmpty]: Start isEmpty. Operand 11119 states and 14218 transitions. [2021-11-23 14:04:57,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1922 [2021-11-23 14:04:57,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:04:57,024 INFO L514 BasicCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 92, 92, 92, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:04:57,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-23 14:04:57,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:04:57,241 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:04:57,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:04:57,241 INFO L85 PathProgramCache]: Analyzing trace with hash -778288604, now seen corresponding path program 2 times [2021-11-23 14:04:57,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:04:57,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002767413] [2021-11-23 14:04:57,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:04:57,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:04:57,304 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:04:57,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [295747796] [2021-11-23 14:04:57,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 14:04:57,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:04:57,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:04:57,306 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:04:57,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-23 14:04:58,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 14:04:58,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:04:58,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 6022 conjuncts, 191 conjunts are in the unsatisfiable core [2021-11-23 14:04:58,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:05:13,779 INFO L134 CoverageAnalysis]: Checked inductivity of 43874 backedges. 0 proven. 39158 refuted. 0 times theorem prover too weak. 4716 trivial. 0 not checked. [2021-11-23 14:05:13,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:05:44,928 INFO L134 CoverageAnalysis]: Checked inductivity of 43874 backedges. 0 proven. 39158 refuted. 0 times theorem prover too weak. 4716 trivial. 0 not checked. [2021-11-23 14:05:44,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:05:44,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002767413] [2021-11-23 14:05:44,928 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:05:44,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295747796] [2021-11-23 14:05:44,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295747796] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:05:44,928 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:05:44,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [190, 190] total 380 [2021-11-23 14:05:44,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265208800] [2021-11-23 14:05:44,930 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:05:44,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 382 states [2021-11-23 14:05:44,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:05:44,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants. [2021-11-23 14:05:44,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36671, Invalid=108871, Unknown=0, NotChecked=0, Total=145542 [2021-11-23 14:05:44,951 INFO L87 Difference]: Start difference. First operand 11119 states and 14218 transitions. Second operand has 382 states, 381 states have (on average 5.149606299212598) internal successors, (1962), 381 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:12:15,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:12:15,680 INFO L93 Difference]: Finished difference Result 20575 states and 26649 transitions. [2021-11-23 14:12:15,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 572 states. [2021-11-23 14:12:15,681 INFO L78 Accepts]: Start accepts. Automaton has has 382 states, 381 states have (on average 5.149606299212598) internal successors, (1962), 381 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1921 [2021-11-23 14:12:15,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:12:15,725 INFO L225 Difference]: With dead ends: 20575 [2021-11-23 14:12:15,725 INFO L226 Difference]: Without dead ends: 20574 [2021-11-23 14:12:15,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4219 GetRequests, 3460 SyntacticMatches, 0 SemanticMatches, 759 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133579 ImplicationChecksByTransitivity, 85.8s TimeCoverageRelationStatistics Valid=181449, Invalid=396911, Unknown=0, NotChecked=0, Total=578360 [2021-11-23 14:12:15,780 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 74293 mSDsluCounter, 12737 mSDsCounter, 0 mSdLazyCounter, 4564 mSolverCounterSat, 1065 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74293 SdHoareTripleChecker+Valid, 12974 SdHoareTripleChecker+Invalid, 5629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1065 IncrementalHoareTripleChecker+Valid, 4564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-23 14:12:15,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74293 Valid, 12974 Invalid, 5629 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1065 Valid, 4564 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-23 14:12:15,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20574 states. [2021-11-23 14:12:16,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20574 to 20527. [2021-11-23 14:12:16,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20527 states, 20526 states have (on average 1.291337815453571) internal successors, (26506), 20526 states have internal predecessors, (26506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:12:16,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20527 states to 20527 states and 26506 transitions. [2021-11-23 14:12:16,338 INFO L78 Accepts]: Start accepts. Automaton has 20527 states and 26506 transitions. Word has length 1921 [2021-11-23 14:12:16,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:12:16,340 INFO L470 AbstractCegarLoop]: Abstraction has 20527 states and 26506 transitions. [2021-11-23 14:12:16,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 382 states, 381 states have (on average 5.149606299212598) internal successors, (1962), 381 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:12:16,341 INFO L276 IsEmpty]: Start isEmpty. Operand 20527 states and 26506 transitions. [2021-11-23 14:12:16,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2786 [2021-11-23 14:12:16,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:12:16,408 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 188, 188, 188, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:12:16,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-11-23 14:12:16,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:12:16,613 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:12:16,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:12:16,614 INFO L85 PathProgramCache]: Analyzing trace with hash -629661148, now seen corresponding path program 3 times [2021-11-23 14:12:16,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:12:16,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521464749] [2021-11-23 14:12:16,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:12:16,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:12:16,679 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:12:16,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1191212053] [2021-11-23 14:12:16,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 14:12:16,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:12:16,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:12:16,681 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:12:16,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-23 14:12:17,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-23 14:12:17,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:12:17,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 14:12:17,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:12:20,233 INFO L134 CoverageAnalysis]: Checked inductivity of 165938 backedges. 1137 proven. 0 refuted. 0 times theorem prover too weak. 164801 trivial. 0 not checked. [2021-11-23 14:12:20,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 14:12:20,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:12:20,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521464749] [2021-11-23 14:12:20,233 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:12:20,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191212053] [2021-11-23 14:12:20,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191212053] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:12:20,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:12:20,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:12:20,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876886233] [2021-11-23 14:12:20,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:12:20,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 14:12:20,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:12:20,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 14:12:20,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 14:12:20,237 INFO L87 Difference]: Start difference. First operand 20527 states and 26506 transitions. Second operand has 6 states, 5 states have (on average 30.8) internal successors, (154), 6 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:12:21,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:12:21,372 INFO L93 Difference]: Finished difference Result 40467 states and 52096 transitions. [2021-11-23 14:12:21,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 14:12:21,372 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 30.8) internal successors, (154), 6 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2785 [2021-11-23 14:12:21,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:12:21,421 INFO L225 Difference]: With dead ends: 40467 [2021-11-23 14:12:21,421 INFO L226 Difference]: Without dead ends: 40466 [2021-11-23 14:12:21,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2793 GetRequests, 2784 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-23 14:12:21,433 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 570 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:12:21,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [570 Valid, 677 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:12:21,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40466 states. [2021-11-23 14:12:22,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40466 to 25777. [2021-11-23 14:12:22,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25777 states, 25776 states have (on average 1.3049348230912476) internal successors, (33636), 25776 states have internal predecessors, (33636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:12:22,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25777 states to 25777 states and 33636 transitions. [2021-11-23 14:12:22,312 INFO L78 Accepts]: Start accepts. Automaton has 25777 states and 33636 transitions. Word has length 2785 [2021-11-23 14:12:22,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:12:22,314 INFO L470 AbstractCegarLoop]: Abstraction has 25777 states and 33636 transitions. [2021-11-23 14:12:22,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 30.8) internal successors, (154), 6 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:12:22,314 INFO L276 IsEmpty]: Start isEmpty. Operand 25777 states and 33636 transitions. [2021-11-23 14:12:22,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2789 [2021-11-23 14:12:22,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:12:22,383 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 187, 187, 187, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 6, 6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:12:22,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-11-23 14:12:22,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-11-23 14:12:22,585 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:12:22,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:12:22,586 INFO L85 PathProgramCache]: Analyzing trace with hash -585310335, now seen corresponding path program 1 times [2021-11-23 14:12:22,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:12:22,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115922825] [2021-11-23 14:12:22,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:12:22,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:12:22,675 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:12:22,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [391222541] [2021-11-23 14:12:22,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:12:22,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:12:22,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:12:22,677 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:12:22,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a040ec-7a33-4d20-aad3-f4723a4b7d61/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-23 14:12:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:12:24,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 9196 conjuncts, 383 conjunts are in the unsatisfiable core [2021-11-23 14:12:24,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:13:07,422 INFO L134 CoverageAnalysis]: Checked inductivity of 165567 backedges. 0 proven. 160851 refuted. 0 times theorem prover too weak. 4716 trivial. 0 not checked. [2021-11-23 14:13:07,422 INFO L328 TraceCheckSpWp]: Computing backward predicates...